EP 2930201 B1 20170517 - METHOD FOR PREPARING A COMPOSITION COMPRISING PERFLUOROPOLYETHER HAVING A HYDROXYL GROUP AT ONE TERMINAL
Title (en)
METHOD FOR PREPARING A COMPOSITION COMPRISING PERFLUOROPOLYETHER HAVING A HYDROXYL GROUP AT ONE TERMINAL
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER ZUSAMMENSETZUNG MIT PERFLUORPOLYETHER MIT EINER HYDROXYLGRUPPE AN EINEM ENDE
Title (fr)
PROCÉDÉ DE PRÉPARATION D'UNE COMPOSITION COMPRENANT UN PERFLUOROPOLYÉTHER AYANT UN GROUPE HYDROXYLE AU NIVEAU D'UNE TERMINAISON
Publication
Application
Priority
JP 2014081173 A 20140410
Abstract (en)
[origin: EP2930201A1] An object of the present invention is to provide a method for efficiently and highly selectively preparing a composition comprising perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. The present invention provides a method for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal and perfluoropolyether having hydroxyl groups at both terminals in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio. Further, present invention provides for increasing a ratio of perfluoropolyether having a hydroxyl group at one terminal, relative to a total amount of the perfluoropolyether having a hydroxyl group at one terminal, perfluoropolyether having hydroxyl groups at both terminals and perfluoropolyether having no hydroxyl group at any terminal perfluoropolyether, in a composition comprising these perfluoropolyethers, wherein the method comprises a step of subjecting the composition to chromatography in which a moving phase is supercritical or subcritical state carbon dioxide of the specific temperature and the specific pressure, and a stationary phase is silica gel to thereby collect a fraction containing the perfluoropolyether having a hydroxyl group at one terminal at a higher ratio.
IPC 8 full level
C08G 65/00 (2006.01); C08G 65/30 (2006.01); C08G 65/46 (2006.01)
CPC (source: EP US)
B01D 15/12 (2013.01 - EP US); C08G 65/007 (2013.01 - EP US); C08G 65/30 (2013.01 - EP US); C08G 65/46 (2013.01 - EP US); C08L 71/00 (2013.01 - US); Y02P 20/54 (2015.11 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 2930201 A1 20151014; EP 2930201 B1 20170517; CN 104971516 A 20151014; CN 104971516 B 20180706; JP 2015199888 A 20151112; JP 6219221 B2 20171025; KR 102361916 B1 20220211; KR 20150117610 A 20151020; TW 201605970 A 20160216; TW I651366 B 20190221; US 2015291790 A1 20151015; US 9951222 B2 20180424
DOCDB simple family (application)
EP 15162845 A 20150408; CN 201510166120 A 20150409; JP 2014081173 A 20140410; KR 20150048828 A 20150407; TW 104110449 A 20150331; US 201514682290 A 20150409